Home / 1,451.78-2,004.26-1,311.42

Finding the Fourth Proportional to 1,451.78, 2,004.26 and 1,311.42

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Solution

The fourth proportional to 1,451.78, 2,004.26 and 1,311.42 is: 1,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.78 : 2,004.26 = 1,311.42 : x
  2. Step 2: Convert to fraction form
    1,451.78/2,004.26 = 1,311.42/x
  3. Step 3: Cross multiply
    1,451.78x = 2,004.26 × 1,311.42
  4. Step 4: Simplify right side
    1,451.78x = 2,628,420.09
  5. Step 5: Solve for x
    x = 2,628,420.09/1,451.78
  6. Step 6: Final answer
    x = 1,810.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.